VisSim/Block Reference

The Blocks menu lists the standard blocks provided with VisSim. When you click on the Blocks menu, most of the items that appear have a filled triangle (s) next to them. These items are block categories. Click on a block category and a cascading menu appears listing the additional blocks.

To make it easier to find blocks in this section, they are presented in alphabetical order, regardless of their block category. For most blocks, a mathematical function is included. The following table translates the symbols that may appear in the function:

Symbol

What It Represents

A

Amplitude

e

Naperian constant

dt

Derivative with respect to time

lb

Lower bound

mod

Modulus

s

Laplacian operator

t

Time

ub

Upper bound

ω

Frequency

x

Input signal

y

Output signal

Input signals are represented as x1, x2, …xn where x1 represents the topmost signal entering the block. When n is omitted, x1 is assumed.

Output signals are represented as y1, y2, …yn, where y1 represents the topmost signal exiting the block. When n is omitted, y1 is assumed.